If you are having trouble with your Apache server software, you should
take the following steps:

Check the ErrorLog!

Apache tries to be helpful when it encounters a problem. In many
cases, it will provide some details by writing one or more messages to the
server error log. Sometimes this is enough for you to diagnose and fix
the problem yourself (such as file permissions or the like). The default
location of the error log is
/usr/local/apache2/logs/error_log, but see the ErrorLog directive in your config files for the
location on your server.

If you end up in any of the support forums this is quite likely to be the
first place they will ask you retrieve information from. Please ensure you
know where to find your errorlog. If you are unsure, the wiki page
here can
give you some ideas where to look.

Most problems that
get reported to The Apache Group are recorded in the bug database.
Do not submit a new bug report until you have
checked existing reports (open and closed) and asked
about your problem in a user-support forum (see below). If you
find that your issue has already been reported, please
don't add a "me, too" report.